Heat-transfer apparatus



Aug. 20, 1929.. F. J. swENsoN HEAT TRANSFER APPARATUS Filed March 10, 1926 NN @QA Patented Aug. 20, 1929.

l UNITED STATES v 1,725,549 PATENT: OFFICE.

rnANx .1. swENsoN,

OF BROOKLYN, NEW YORK, ASSIGNOR TO FOSTER WHEELER CORPORATION, OF NEW YORK, N. Y., A. CORPORATION 0F NEW YORK.

HEAT-manieren ArrAnA'rUs.

Application filed -March 10, 1926. Serial No. 93,549.

This invention relates to a, heat transfer apparatus and as herein Lillustrated and described the application thereof is embodied in a surface condenser, although it will be understood that the invention not limited to this particular use.

Heretofore in heat transfer apparatus of the type to which this invention relates, it has been customary to employ a casing 0r -shell and a plurality of nested or bundled tubes within the shell, together with means for supplying a cooling medium eitherinteriorly or exteriorly of the tubes to effect the transfer of heat from steam or any given medium passed to the interior of the shell or the interior of the tubes, depending of course, upon the mauner in which the cooling medium is applied. In this type of apparatus as I am aware, the construction in some instanceshas also been such as to make it possible to withdraw the nested tubes as a unit in a direction longitudinally of the tubes from `one end of the shell. In structures of this nature, however, it has been difficult, if not impossible, to fill the shell with the tubes or to make the baffle plates usually employedV to accurately fit Within the shell, resulting in waste space and undesirable passages for the vapors, and furthermore, the withdrawalV of thenested or bundled tubes longitudinally required considerable floor space for this operation.

The object of my invention is the provision of a heat exchange apparatus preferably in the form of a surface'condenser which is so constructed that the shell or casing is made in parts which are separable longitudinally so that when one or more of the parts'of the shell is removed the tubes may be removed as a unitA in a directiontransversely of their. length. In this construction it is also -possiblelto substantially fill thel shell with the tubes and to make the transverse baiiles and tube supports t the shell so as to prevent the passage of the iiuids in anypath except that intended, thereby increasing the efficiency of the apparatus and making the handling of the same considerably easier than in types of this apparatus heretofore employed'.

In the drawing Figure -1 is an elevation and art-ial vertical section of an apparatus emodying my present invention..

Fig. 2 is a section on line 2-2, Fig. 1, and

Fig. 3 is a partial elevation and section i1-` lustrating another form of one end of the apparatus.

Referring to the drawing and particularly to Flgs. 1 and 2, it will be seen that I have illustrated my invention as embodied in a surface condenser. This condenser comprises a casing or shell, the body of which is prefer'- ably made in halves, the division being made longitudinally so that there is a lower shell part 10 and an upper shell part l1. These parts of the shell are provided respectively with flanges 12, 13 and 14, 15, by which the parts of the shell when superimposed may be connected by suitable bolts, as is customary,v or otherwise. In this structure I also referably employ a centrally disposed partition plate 16 which extends across the shell and lies intermediate of the lflanged portions of the parts .thereof to which it is also connected by the bolts or equivalent devices connecting the parts of the shell.

.The upper part of the shell is fitted with an inlet nozzle 17 for the intake of steam or other fluid and the lower part of the shell is provided with an outlet nozzle 18 forthe discharge 'of the condensed steam or fluid.

. At one end of the parts of the shell the same are providedfwith flanges 19, and a tube plate 2O abuts against these flanges 19 and lies between the same and a water box 21. parts, namely the tube plate and the water .box are connected to the flanges 19 and consequently to the shell by means of suitable bolts or otherwise. As is customary, the Water box is provided with an inletnozzle 22 and an outlet nozzle 23. These nozzles like the nozzles provided on the shell ma be-made to assume lthe necessary positions or use in any particular case. Also as is customary, the water box is fitted with a bonnet 24 and a centrally disposed partition wall 25.

In this form of the apparatus the opposite ends of the members or parts of the shell are enlarged as indicated at 26, terminating in fianges 27 adapted to be connected by suitable bolts or otherwise to a ange 28 of an end bonnet 29. y s

Within the shell or casing there isa plurality oftubes indicated at 30. At one end these tubes are connected in the tube plate 20 in any suitable manner, and at theiropposite ends the tubes 30 are similarly connected in a tube plate 31 to which there is suitably secured a bonnet 32 which lies within the bonnet 29.l The tube plate 31 and the bonnet 32 form a floating head which due to the expension and contractmn -of the tubes may These l move longitudinally on guide supports 33 provided therefor in the enlarged end portion/fof the parts of the shell. Within the shell therefis provided a plurality of suit ably spaced walls 34 which act both as tube supports and as baffles for directing. the passage' of the Huid through-the apparatus. 'It

will be noted that the partition'plate 16 is provided with an aperture 35 in that end thereof which lies adjacent the tube plate'31 so as to. provide 'a passage forthe fluids from the upper to the lower section of the apparatus. The support and baie walls 34 are pr vided with suitablejopenings in addition to'the tube openings for the passage of the fiuid through the shell, as is customary in this art, for example, as illustrated in Fig. 2 one of the transverse baies above the longitudinal partition wall ma be provided with an opening 37 at one side t ereof and the next adjacent baftlewith anopening 38 in the opposite' side thereof, these openings being staggered in adjacent bales to provide for a zig-zag course of the uid in passing through the-shell. In like manner, one' of the battles below the longitudinal partition wall may be provided with an opening 39 and the next adjacentbaie with an opening 40, the opening 39 being at one side of the bale while Ythe opening 40 is at the opposite side of another baille. These openings, therefore, are also l staggered in adjacent bailies so as to provide l for a zig-.zag path for the fluid in passing 'through the lower compartment in the shell in the same manner that it is caused to pass x throu h the up er compartment.y

-Re erring to ig. 3 it will be seen that the enlarged-end'portions of the shell may be made integral to provide a bonnet which is a part yof the shell as indicated at 36. In this structure the longitudinal flanges of the upf per and lower members of the shell are continued as indicatedat 12 and 14', and the partitionplate 16 also continued longitudinally tothe extremityy of this end of the apparatus. v

In the construction of the heat exchange apparatus as hereinbefore described, the tubes may be so placed as to substantially ill the members of the shell when the parts are as-L I sembled, and furthermore, the partition walls forming the support and baille plates may be made to closely fit within the shell and against the longitudinal partition wall thereby p0sitively causing the passage of the fluids in the intended. directions, and as will alsobe apparent, by -removing the water boxat 'one end and the bonnet at the other end of the construction as shown in Fig. 1, or merely by removing the waterbox in the construction as shown in Fig. 3, and separating the parts.

of the shell, the entire bundle or nest of tubes .the ends of the said tubes being secured in the said tube plates and the parts ofthe particular features involved casing being separable after thel first afore- I said tube plate is disconnected therefrom in order to remove thetubes and tube plates bodily `as a unit in a direction transversely of the length of the tubes.

l2. InI a heat transfer apparatus, a shell l divided longitudinally into substantially similar members, a nest of tubes therein, and

oa plurality of diametrically transverse walls each forming a tube support and baffle plate and having its peripheral dimensions -corresponding substantially with the inner transverse dimensions of the shell wherebythe parts of the shell are separable making possible the removal of the nest of tubes as aY unit and also in placing the parts of the shell together and 'connectingthe same with the said plates in position,'liquid tight joints are made between these parts.

3. In a heat transfer apparatus, a shell divided lon 'tudinally into substantially similar 'mem rs, a nest of tubes' therein, a

'longitudinal partition wall, and a plurality of diametrically transverse walls each comprising a section having anzedge abutting against the saidlongitudinal partitionvwall and an edge corresponding with the inner surface of the shell'whereby the parts of the shell are separable for the removal ofthe nest of tubes and the partition wallsas a unit, andlalso whereby in placing the parts of the shell together and connecting the same in position the said Vedges of the partsof each 'transverse partition wall form tight joints between the shell and the transverse partition wall. 'A Signed by me this 1st day of March, 1926.

.FRANK J. SWENSON. 

